Display Screen Assembly and Terminal

1. A display screen assembly comprising: a display screen comprising a display surface, the display surface comprising a display region and a non-display region, and the non-display region surrounding the display region; a frame being provided with a frame flange on the display screen, the frame flange at least partly shielding the non-display region; and a transparent protective plate, wherein a periphery of the transparent protective plate is secured to the frame, the transparent protective plate comprises a bottom surface close to the display screen, and the bottom surface at least covers the display surface, wherein the periphery of the transparent protective plate is provided with an engaging structure, the engaging structure is a step facing the frame flange, and the frame flange is positioned on the engaging structure; and an area of an orthogonal projection of the display region to form the step on a surface of the transparent protective plate away from the display screen is the same as that of the surface of the transparent protective plate away from the display screen.

2. The display screen assembly of claim 1 , wherein the bottom surface is bonded to the display surface via optical adhesive, and the optical adhesive covers the display region and the non-display region.

3. The display screen assembly of claim 1 , wherein an area of an orthogonal projection of the display surface is smaller than that of a surface of the transparent protective plate closest to the display screen.

4. The display screen assembly of claim 1 , wherein the step is formed between the frame flange and the transparent protective plate to cause the transparent protective plate to be recessed toward the display screen relative to the frame.

5. The display screen assembly of claim 1 , wherein the engaging structure comprises a cover surface and a bearing surface opposite to the cover surface, the bearing surface is close to the display screen, the cover surface and the bearing surface cooperatively define a receiving groove therebetween, the flange comprises a top surface and a viewable surface lower than the top surface, the top surface of the flange is flush with a top surface of the transparent protective plate away from the display screen, and the viewable surface is received in the receiving groove and faces the cover surface.

6. The display screen assembly of claim 1 , wherein the frame flange is laminated on the transparent protective plate to form the step.

7. The display screen assembly of claim 1 , wherein one side of the frame flange close to the transparent protective plate is provided with a depression, the transparent protective plate is provided with a protrusion corresponding to the depression, and the protrusion is received in the depression.

8. The display screen assembly of claim 1 , wherein the transparent protective plate is glass.

9. The display screen assembly of claim 1 , wherein the transparent protective plate and the frame are integrally formed.

10. The display screen assembly of claim 1 , wherein a thickness of the transparent protective plate is 0.3 mm˜2.0 mm.

11. A terminal comprising: a display screen comprising a display surface, the display surface comprising a display region and a non-display region, and the non-display region surrounding the display region; a frame provided with a frame flange on the display screen, the frame flange having an orthogonal projection thereof on the display surface at least partly overlapped with the non-display region; and a transparent protective plate, wherein a periphery of the transparent plate is secured to the frame, the transparent protective plate comprises a bottom surface close to the display screen, and the bottom surface at least covers the display surface, wherein the periphery of the transparent protective plate is provided with an engaging structure, the engaging structure is a step facing the frame flange, and the frame flange is positioned on the engaging structure; and an area of an orthogonal projection of the display region to form the step on a surface of the transparent protective plate away from the display screen is the same as that of the surface of the transparent protective plate away from the display screen.

12. The terminal of claim 11 , wherein the engaging structure comprises a cover surface and a bearing surface opposite to the cover surface, the bearing surface is close to the display screen, the cover surface and the bearing surface cooperatively define a receiving groove therebetween, the frame flange comprises a top surface and a viewable surface lower than the top surface, the top surface of the frame flange is flush with a top surface of the transparent protective plate away from the display screen, and the viewable surface is received in the receiving groove and faces the cover surface.

13. The terminal of claim 11 , wherein the frame flange is laminated on the transparent protective plate to form the step.

14. The terminal of claim 11 , wherein one side of the frame flange close to the transparent protective plate is provided with a depression, the transparent protective plate is provided with a protrusion corresponding to the depression, and the protrusion is received in the depression.